In speech enhancement and source separation, the ubiquitous measure to estimate the quality of a system is the source-to-distortion ratio (SDR).
A recent overview study on declipping algorithms [1]} used the difference of the SDR between the output and reference signal (\(\mathrm {SDR_{out}}\) ) and the SDR between the distorted and reference signal (\(\mathrm {SDR_{inp}}\) ) as evaluation metric. In order not to penalize methods that produce inconsistent outputs in the reliable, non-clipped part, they consider only clipped regions of the signal for computing the SDR.
